enable AS::JSON.encode to encode AR::Relation by providing as_json …

…method
mislav · Jul 8, 2010 · 59a4fe0 · 59a4fe0
1 parent 9ac9c35
commit 59a4fe0
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diff --git a/activerecord/lib/active_record/relation.rb b/activerecord/lib/active_record/relation.rb
@@ -74,6 +74,8 @@ def to_a
       @records
     end
 
+    def as_json(options = nil) to_a end #:nodoc:
+
     # Returns size of the records.
     def size
       loaded? ? @records.length : count

diff --git a/activerecord/test/cases/json_serialization_test.rb b/activerecord/test/cases/json_serialization_test.rb
@@ -201,4 +201,11 @@ def test_should_allow_options_for_hash_of_authors
     }
     assert_equal %({"1":{"author":{"name":"David"}}}), ActiveSupport::JSON.encode(authors_hash, :only => [1, :name])
   end
+
+  def test_should_be_able_to_encode_relation
+    authors_relation = Author.where(:id => [@david.id, @mary.id])
+
+    json = ActiveSupport::JSON.encode authors_relation, :only => :name
+    assert_equal '[{"author":{"name":"David"}},{"author":{"name":"Mary"}}]', json
+  end
 end